Ans.Life activities are controlled and coordinated i e., body works as one unit, in which its different
Organ and cooperation and work in harmony with each other.
When a boy runs to catch a ball, he uses hundreds of muscles to move his arms, legs and back His nervous system uses information from his sense organs and coordinates these muscles Due to this coordination, the muscles contract in the correct sequence, power and length of time But that is not all Such activities involve many other kinds of coordination For example, breathing and heartbeat rates are increased, blood pressure is adjusted, and extra heat is removed at a faster rate from the body.